Node.js
Node.js is a JavaScript runtime that lets you run JavaScript on the server side. Built on Chrome's V8 engine, it enables full-stack JavaScript development — using the same language for both frontend a…
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Definition
Node.js is a JavaScript runtime that lets you run JavaScript on the server side. Built on Chrome's V8 engine, it enables full-stack JavaScript development — using the same language for both frontend and backend. Node.js excels at building scalable, real-time applications like chat systems, APIs, and streaming services.
Key Points
- Non-blocking, event-driven I/O for handling concurrent connections efficiently
- NPM (Node Package Manager) provides the world's largest software registry
- Ideal for real-time applications: chat, live dashboards, collaborative tools
- Full-stack JavaScript: same language on frontend and backend reduces context switching
Related Terms
Frequently Asked Questions
Yes. Netflix, PayPal, LinkedIn, and Walmart use Node.js in production. For Indian enterprises, Node.js offers fast development speed, good performance for I/O-heavy workloads, and access to the largest developer pool. However, CPU-intensive tasks (video processing, complex calculations) may benefit from Python or Go.
Choose Node.js if your team already knows JavaScript, you need real-time features (WebSockets), or you want full-stack JS. Choose Python if you need ML/AI integration, data processing, or scientific computing. Many Indian companies use both — Node.js for APIs and Python for data services.
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